C Tutorial/ctype.h/isprint

isprint

Item Value Header file ctype.h Declaration int isprint(int ch); Return returns nonzero if ch is a printable character, including a space; otherwise zero is returned.

In ASCII code, printable characters are in the range 0x20 through 0x7E.

<source lang="cpp">#include <ctype.h>

 #include <stdio.h>
 int main(void)
 {
   char ch;
   for(;;) {
     ch = getchar();
     if(isprint(ch)){
         printf("%c is printable\n",ch);
     }
     if(ch == "."){
         break;
     }
   }
   return 0;
 }</source>